562 revise navigation column in hugo output

hugo/src/main/scala/com/ossuminc/riddl/hugo/HugoPass.scala

@@ -282,16 +282,19 @@ case class HugoPass(
     loadStaticAssets(inputPath, options)
   }
 
+  private def makeNavigation(root: Root, contentRoot: Path): Unit = {
+
+  }
+
   private def makeIndex(root: Root): Unit = {
     Timer.time("Index Creation") {
-
       val mdw = addFile(Seq.empty[String], "_index.md")
       mdw.fileHead("Index", 10, Option("The main index to the content"))
       mdw.h2("Root Overview")
       val diagram = RootOverviewDiagram(root)
       mdw.emitMermaidDiagram(diagram.generate)
       mdw.h2("Domains")
-      val domains = root.domains
+      val domains = (root.domains ++ root.includes.flatMap(_.contents.filter[Domain]))
         .sortBy(_.id.value)
         .map(d => s"[${d.id.value}](${d.id.value.toLowerCase}/)")
       mdw.list(domains)

hugo/src/main/scala/com/ossuminc/riddl/hugo/PassUtilities.scala

@@ -12,15 +12,13 @@ trait PassUtilities {
   def options: HugoCommand.Options
   val inputFile: Option[Path] = options.inputFile
   protected val messages: Messages.Accumulator
-
-  lazy val newline: String = System.getProperty("line.separator")
-
+
   def makeFullName(definition: Definition): String = {
     val defs = outputs.symbols.parentsOf(definition).reverse :+ definition
     defs.map(_.id.format).mkString(".")
   }
 
-  def makeParents(stack: Seq[Definition]): Seq[Definition] = {
+  private def makeParents(stack: Seq[Definition]): Seq[Definition] = {
     // The stack goes from most nested to highest. We don't want to change the
     // stack (its mutable) so we copy it to a Seq first, then reverse it, then
     // drop all the root containers (file includes) to finally end up at a domin
@@ -32,13 +30,6 @@ trait PassUtilities {
     makeParents(stack).map(_.id.format)
   }
 
-  def makeBreadCrumbs(parents: Seq[Definition]): String = {
-    parents.map { defn =>
-      val link = makeDocLink(defn, parents.map(_.id.value))
-      s"[${defn.id.value}]($link)"
-    }.mkString("/")
-  }
-
   def makeDocLink(definition: NamedValue): String = {
     val parents = makeStringParents(outputs.symbols.parentsOf(definition))
     makeDocLink(definition, parents)